film. If the sensitive film can is great contrast between the original record down, its tolerance; sensitive film only original record of the contrast between the very small tolerance. Checkered Flags For Sale
Take the bottom plate, the camera system should be used in the tolerance of the sensitive film, Cheap Garden Flags Wholesale in order to obtain good quality images.
(e) particle size. After the magnitude of the silver grain thickness of the sensitive film after the exposure, development and processing, known as the particle size. Particle size of the sensitive film, the image is clear. Particle size and particle are two different concepts. Particle is to observe the image of the photographic film, to see the particles in the image scene is certainly the concept of particle size is an objective measure of the heterogeneity of the particles. The particle size depends not only on the average size of the particle diameter and depends on the distribution of the particles. Checkered Flags For Sale The particle size in addition to the factors of the film itself, the development condition and the particle size is closely related to the composition of the developer, the developing temperature so to varying degrees, affect the particle size.
(f) a sense of color. Photographic materials sensitive to different wavelengths of light, called a sense of color. Generally its sensitivity range, the sensitive film is divided into color-blind piece (photographic range of 330 ~ 480nm), orthochromatic film (photographic range of 330nm ~ 600nm), panchromatic film (photosensitive range 330 ~ 700nm). Cheap Garden Flags
(g) resolution and clarity. Resolution refers to the ability of the sensitive film to record image detail, the resolution also called resolving power. Outdoor Flags And Banners The resolution of the photosensitive material is usually in mm wide emulsion layer on a clear record can tell the maximum number of parallel lines to the unit: lines / mm. Domestic plate with the film's resolution is about 50 to 100 lines / mm.
The definition refers to constitute a sensitive film on the clarity of the image, the image-edge sharpness. Such as the black film, black and white's is the high definition, if the black edge of the gray part of the transition is low definition. Checkered Flags For Sale
(h) the sensitometric curve. Sensitive film are subject to different exposure, developing different density. If the exposure abscissa, logarithmic density for the vertical axis of each exposure, you can get a curve, we call this curve as the sensitometric curve. A variety of photosensitive materials will have different sensitometric curve, but any one characteristic curve has four parts. As shown in Figure 2-94, the toe of AB, the straight portion of BC, shoulder CD, Yard Flags And Banners reverse part of the DE. The characteristic shape of the curve changes with the changes of wash conditions. Checkered Flags For Sale
Figure 2-94 the characteristic curve of photographic materials